Well, here we are again with another update ...
I finished the main milling on the front block and have pictures of the two assembled. Really looks like a unit now.
Front 3/4 view...
Rear 3/4 view...
Edge view...
Then I milled the inlet and outlet and cut and machined the copper tube to go into them. Then I fired up the "Blow Lamp"

Here are the results...
Front 3/4 view...
Rear 3/4 view...
Unit disassembled to show the O-Ring seal and the relief for the outlet tube as well as it's custom solder joint.
That's it... now it's just solder trimming and final leak testing... then it's off to polishing and laquering.